/*
 *  Brno University of Technology
 *
 *  Copyright (C) 2009-2010 by Brno University of Technology and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://spl.utko.feec.vutbr.cz
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */

/**
 * Classes related to chromozome evaluation.
 */
package cz.vutbr.feec.utko.ef.evolution;

import cz.vutbr.feec.utko.ef.core.Config;
import cz.vutbr.feec.utko.ef.core.Population;
import cz.vutbr.feec.utko.ef.individuals.MutationIsNotPossibleException;

/**
 * The Interface IEvolutionSpecifier defines the way how the population is being
 * processed (i.e. how the crossover mutation and clone operators are used) in
 * a single evolution.
 */
public interface IEvolutionSpecifier {

	/**
	 * Assign fitness.
	 * 
	 * @param ch the ch
	 */
	public void assignFitness(Chromozome ch);
	
	/**
	 * Evolve a population by a single step.
	 * 
	 * @param cfg
	 *            the configuration of evolution
	 * @param p
	 *            the population
	 * 
	 * @return the population
	 * 
	 * @throws MutationIsNotPossibleException
	 */
	public Population evolve(Config cfg, Population p);

	/**
	 * Gets the number of evaluations.
	 * 
	 * @return the number of evaluations
	 */
	public int getNumOfEvaluations();

	/**
	 * Inits the population.
	 * 
	 * @param config the config
	 * @param population the population
	 */
	public void initPopulation(Config config, Population population);
}
